900 lines
29 KiB
Go
900 lines
29 KiB
Go
package vault
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/armon/go-metrics"
|
|
"github.com/hashicorp/go-multierror"
|
|
sockaddr "github.com/hashicorp/go-sockaddr"
|
|
"github.com/hashicorp/vault/audit"
|
|
"github.com/hashicorp/vault/helper/consts"
|
|
"github.com/hashicorp/vault/helper/errutil"
|
|
"github.com/hashicorp/vault/helper/identity"
|
|
"github.com/hashicorp/vault/helper/jsonutil"
|
|
"github.com/hashicorp/vault/helper/policyutil"
|
|
"github.com/hashicorp/vault/helper/strutil"
|
|
"github.com/hashicorp/vault/helper/wrapping"
|
|
"github.com/hashicorp/vault/logical"
|
|
"github.com/hashicorp/vault/logical/framework"
|
|
)
|
|
|
|
const (
|
|
replTimeout = 10 * time.Second
|
|
)
|
|
|
|
var (
|
|
// DefaultMaxRequestDuration is the amount of time we'll wait for a request
|
|
// to complete, unless overridden on a per-handler basis
|
|
// FIXME: In 0.11 make this 90 seconds; for now keep it at essentially infinity if not set explicitly
|
|
//DefaultMaxRequestDuration = 90 * time.Second
|
|
DefaultMaxRequestDuration = 999999 * time.Hour
|
|
)
|
|
|
|
// HanlderProperties is used to seed configuration into a vaulthttp.Handler.
|
|
// It's in this package to avoid a circular dependency
|
|
type HandlerProperties struct {
|
|
Core *Core
|
|
MaxRequestSize int64
|
|
MaxRequestDuration time.Duration
|
|
DisablePrintableCheck bool
|
|
}
|
|
|
|
// fetchEntityAndDerivedPolicies returns the entity object for the given entity
|
|
// ID. If the entity is merged into a different entity object, the entity into
|
|
// which the given entity ID is merged into will be returned. This function
|
|
// also returns the cumulative list of policies that the entity is entitled to.
|
|
// This list includes the policies from the entity itself and from all the
|
|
// groups in which the given entity ID is a member of.
|
|
func (c *Core) fetchEntityAndDerivedPolicies(entityID string) (*identity.Entity, []string, error) {
|
|
if entityID == "" || c.identityStore == nil {
|
|
return nil, nil, nil
|
|
}
|
|
|
|
//c.logger.Debug("entity set on the token", "entity_id", te.EntityID)
|
|
|
|
// Fetch the entity
|
|
entity, err := c.identityStore.MemDBEntityByID(entityID, false)
|
|
if err != nil {
|
|
c.logger.Error("failed to lookup entity using its ID", "error", err)
|
|
return nil, nil, err
|
|
}
|
|
|
|
if entity == nil {
|
|
// If there was no corresponding entity object found, it is
|
|
// possible that the entity got merged into another entity. Try
|
|
// finding entity based on the merged entity index.
|
|
entity, err = c.identityStore.MemDBEntityByMergedEntityID(entityID, false)
|
|
if err != nil {
|
|
c.logger.Error("failed to lookup entity in merged entity ID index", "error", err)
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
|
|
var policies []string
|
|
if entity != nil {
|
|
//c.logger.Debug("entity successfully fetched; adding entity policies to token's policies to create ACL")
|
|
|
|
// Attach the policies on the entity
|
|
policies = append(policies, entity.Policies...)
|
|
|
|
groupPolicies, err := c.identityStore.groupPoliciesByEntityID(entity.ID)
|
|
if err != nil {
|
|
c.logger.Error("failed to fetch group policies", "error", err)
|
|
return nil, nil, err
|
|
}
|
|
|
|
// Attach the policies from all the groups
|
|
policies = append(policies, groupPolicies...)
|
|
}
|
|
|
|
return entity, policies, err
|
|
}
|
|
|
|
func (c *Core) fetchACLTokenEntryAndEntity(req *logical.Request) (*ACL, *logical.TokenEntry, *identity.Entity, []string, error) {
|
|
defer metrics.MeasureSince([]string{"core", "fetch_acl_and_token"}, time.Now())
|
|
|
|
// Ensure there is a client token
|
|
if req.ClientToken == "" {
|
|
return nil, nil, nil, nil, fmt.Errorf("missing client token")
|
|
}
|
|
|
|
if c.tokenStore == nil {
|
|
c.logger.Error("token store is unavailable")
|
|
return nil, nil, nil, nil, ErrInternalError
|
|
}
|
|
|
|
// Resolve the token policy
|
|
var te *logical.TokenEntry
|
|
switch req.TokenEntry() {
|
|
case nil:
|
|
var err error
|
|
te, err = c.tokenStore.Lookup(c.activeContext, req.ClientToken)
|
|
if err != nil {
|
|
c.logger.Error("failed to lookup token", "error", err)
|
|
return nil, nil, nil, nil, ErrInternalError
|
|
}
|
|
default:
|
|
te = req.TokenEntry()
|
|
}
|
|
|
|
// Ensure the token is valid
|
|
if te == nil {
|
|
return nil, nil, nil, nil, logical.ErrPermissionDenied
|
|
}
|
|
|
|
// CIDR checks bind all tokens except non-expiring root tokens
|
|
if te.TTL != 0 && len(te.BoundCIDRs) > 0 {
|
|
var valid bool
|
|
remoteSockAddr, err := sockaddr.NewSockAddr(req.Connection.RemoteAddr)
|
|
if err != nil {
|
|
if c.Logger().IsDebug() {
|
|
c.Logger().Debug("could not parse remote addr into sockaddr", "error", err, "remote_addr", req.Connection.RemoteAddr)
|
|
}
|
|
return nil, nil, nil, nil, logical.ErrPermissionDenied
|
|
}
|
|
for _, cidr := range te.BoundCIDRs {
|
|
if cidr.Contains(remoteSockAddr) {
|
|
valid = true
|
|
break
|
|
}
|
|
}
|
|
if !valid {
|
|
return nil, nil, nil, nil, logical.ErrPermissionDenied
|
|
}
|
|
}
|
|
|
|
entity, identityPolicies, err := c.fetchEntityAndDerivedPolicies(te.EntityID)
|
|
if err != nil {
|
|
return nil, nil, nil, nil, ErrInternalError
|
|
}
|
|
|
|
allPolicies := append(te.Policies, identityPolicies...)
|
|
|
|
// Construct the corresponding ACL object
|
|
acl, err := c.policyStore.ACL(c.activeContext, allPolicies...)
|
|
if err != nil {
|
|
c.logger.Error("failed to construct ACL", "error", err)
|
|
return nil, nil, nil, nil, ErrInternalError
|
|
}
|
|
|
|
return acl, te, entity, identityPolicies, nil
|
|
}
|
|
|
|
func (c *Core) checkToken(ctx context.Context, req *logical.Request, unauth bool) (*logical.Auth, *logical.TokenEntry, error) {
|
|
defer metrics.MeasureSince([]string{"core", "check_token"}, time.Now())
|
|
|
|
var acl *ACL
|
|
var te *logical.TokenEntry
|
|
var entity *identity.Entity
|
|
var identityPolicies []string
|
|
var err error
|
|
|
|
// Even if unauth, if a token is provided, there's little reason not to
|
|
// gather as much info as possible for the audit log and to e.g. control
|
|
// trace mode for EGPs.
|
|
if !unauth || (unauth && req.ClientToken != "") {
|
|
acl, te, entity, identityPolicies, err = c.fetchACLTokenEntryAndEntity(req)
|
|
// In the unauth case we don't want to fail the command, since it's
|
|
// unauth, we just have no information to attach to the request, so
|
|
// ignore errors...this was best-effort anyways
|
|
if err != nil && !unauth {
|
|
return nil, te, err
|
|
}
|
|
}
|
|
|
|
if entity != nil && entity.Disabled {
|
|
c.logger.Warn("permission denied as the entity on the token is disabled")
|
|
return nil, te, logical.ErrPermissionDenied
|
|
}
|
|
if te != nil && te.EntityID != "" && entity == nil {
|
|
c.logger.Warn("permission denied as the entity on the token is invalid")
|
|
return nil, te, logical.ErrPermissionDenied
|
|
}
|
|
|
|
// Check if this is a root protected path
|
|
rootPath := c.router.RootPath(req.Path)
|
|
|
|
if rootPath && unauth {
|
|
return nil, nil, errors.New("cannot access root path in unauthenticated request")
|
|
}
|
|
|
|
// When we receive a write of either type, rather than require clients to
|
|
// PUT/POST and trust the operation, we ask the backend to give us the real
|
|
// skinny -- if the backend implements an existence check, it can tell us
|
|
// whether a particular resource exists. Then we can mark it as an update
|
|
// or creation as appropriate.
|
|
if req.Operation == logical.CreateOperation || req.Operation == logical.UpdateOperation {
|
|
checkExists, resourceExists, err := c.router.RouteExistenceCheck(ctx, req)
|
|
switch err {
|
|
case logical.ErrUnsupportedPath:
|
|
// fail later via bad path to avoid confusing items in the log
|
|
checkExists = false
|
|
case nil:
|
|
// Continue on
|
|
default:
|
|
c.logger.Error("failed to run existence check", "error", err)
|
|
if _, ok := err.(errutil.UserError); ok {
|
|
return nil, nil, err
|
|
} else {
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
}
|
|
|
|
switch {
|
|
case checkExists == false:
|
|
// No existence check, so always treat it as an update operation, which is how it is pre 0.5
|
|
req.Operation = logical.UpdateOperation
|
|
case resourceExists == true:
|
|
// It exists, so force an update operation
|
|
req.Operation = logical.UpdateOperation
|
|
case resourceExists == false:
|
|
// It doesn't exist, force a create operation
|
|
req.Operation = logical.CreateOperation
|
|
default:
|
|
panic("unreachable code")
|
|
}
|
|
}
|
|
// Create the auth response
|
|
auth := &logical.Auth{
|
|
ClientToken: req.ClientToken,
|
|
Accessor: req.ClientTokenAccessor,
|
|
Policies: identityPolicies,
|
|
IdentityPolicies: identityPolicies,
|
|
}
|
|
|
|
if te != nil {
|
|
auth.TokenPolicies = te.Policies
|
|
auth.Policies = append(te.Policies, identityPolicies...)
|
|
auth.Metadata = te.Meta
|
|
auth.DisplayName = te.DisplayName
|
|
auth.EntityID = te.EntityID
|
|
// Store the entity ID in the request object
|
|
req.EntityID = te.EntityID
|
|
}
|
|
|
|
// Check the standard non-root ACLs. Return the token entry if it's not
|
|
// allowed so we can decrement the use count.
|
|
authResults := c.performPolicyChecks(ctx, acl, te, req, entity, &PolicyCheckOpts{
|
|
Unauth: unauth,
|
|
RootPrivsRequired: rootPath,
|
|
})
|
|
if authResults.Error.ErrorOrNil() != nil {
|
|
return auth, te, authResults.Error
|
|
}
|
|
if !authResults.Allowed {
|
|
// Return auth for audit logging even if not allowed
|
|
return auth, te, logical.ErrPermissionDenied
|
|
}
|
|
|
|
return auth, te, nil
|
|
}
|
|
|
|
// HandleRequest is used to handle a new incoming request
|
|
func (c *Core) HandleRequest(httpCtx context.Context, req *logical.Request) (resp *logical.Response, err error) {
|
|
c.stateLock.RLock()
|
|
defer c.stateLock.RUnlock()
|
|
if c.Sealed() {
|
|
return nil, consts.ErrSealed
|
|
}
|
|
if c.standby {
|
|
return nil, consts.ErrStandby
|
|
}
|
|
|
|
ctx, cancel := context.WithCancel(c.activeContext)
|
|
defer cancel()
|
|
|
|
go func() {
|
|
select {
|
|
case <-ctx.Done():
|
|
case <-httpCtx.Done():
|
|
cancel()
|
|
}
|
|
}()
|
|
|
|
// Allowing writing to a path ending in / makes it extremely difficult to
|
|
// understand user intent for the filesystem-like backends (kv,
|
|
// cubbyhole) -- did they want a key named foo/ or did they want to write
|
|
// to a directory foo/ with no (or forgotten) key, or...? It also affects
|
|
// lookup, because paths ending in / are considered prefixes by some
|
|
// backends. Basically, it's all just terrible, so don't allow it.
|
|
if strings.HasSuffix(req.Path, "/") &&
|
|
(req.Operation == logical.UpdateOperation ||
|
|
req.Operation == logical.CreateOperation) {
|
|
return logical.ErrorResponse("cannot write to a path ending in '/'"), nil
|
|
}
|
|
|
|
var auth *logical.Auth
|
|
if c.router.LoginPath(req.Path) {
|
|
resp, auth, err = c.handleLoginRequest(ctx, req)
|
|
} else {
|
|
resp, auth, err = c.handleRequest(ctx, req)
|
|
}
|
|
|
|
// Ensure we don't leak internal data
|
|
if resp != nil {
|
|
if resp.Secret != nil {
|
|
resp.Secret.InternalData = nil
|
|
}
|
|
if resp.Auth != nil {
|
|
resp.Auth.InternalData = nil
|
|
}
|
|
}
|
|
|
|
// We are wrapping if there is anything to wrap (not a nil response) and a
|
|
// TTL was specified for the token. Errors on a call should be returned to
|
|
// the caller, so wrapping is turned off if an error is hit and the error
|
|
// is logged to the audit log.
|
|
wrapping := resp != nil &&
|
|
err == nil &&
|
|
!resp.IsError() &&
|
|
resp.WrapInfo != nil &&
|
|
resp.WrapInfo.TTL != 0 &&
|
|
resp.WrapInfo.Token == ""
|
|
|
|
if wrapping {
|
|
cubbyResp, cubbyErr := c.wrapInCubbyhole(ctx, req, resp, auth)
|
|
// If not successful, returns either an error response from the
|
|
// cubbyhole backend or an error; if either is set, set resp and err to
|
|
// those and continue so that that's what we audit log. Otherwise
|
|
// finish the wrapping and audit log that.
|
|
if cubbyResp != nil || cubbyErr != nil {
|
|
resp = cubbyResp
|
|
err = cubbyErr
|
|
} else {
|
|
wrappingResp := &logical.Response{
|
|
WrapInfo: resp.WrapInfo,
|
|
Warnings: resp.Warnings,
|
|
}
|
|
resp = wrappingResp
|
|
}
|
|
}
|
|
|
|
auditResp := resp
|
|
// When unwrapping we want to log the actual response that will be written
|
|
// out. We still want to return the raw value to avoid automatic updating
|
|
// to any of it.
|
|
if req.Path == "sys/wrapping/unwrap" &&
|
|
resp != nil &&
|
|
resp.Data != nil &&
|
|
resp.Data[logical.HTTPRawBody] != nil {
|
|
|
|
// Decode the JSON
|
|
if resp.Data[logical.HTTPRawBodyAlreadyJSONDecoded] != nil {
|
|
delete(resp.Data, logical.HTTPRawBodyAlreadyJSONDecoded)
|
|
} else {
|
|
httpResp := &logical.HTTPResponse{}
|
|
err := jsonutil.DecodeJSON(resp.Data[logical.HTTPRawBody].([]byte), httpResp)
|
|
if err != nil {
|
|
c.logger.Error("failed to unmarshal wrapped HTTP response for audit logging", "error", err)
|
|
return nil, ErrInternalError
|
|
}
|
|
|
|
auditResp = logical.HTTPResponseToLogicalResponse(httpResp)
|
|
}
|
|
}
|
|
|
|
var nonHMACReqDataKeys []string
|
|
var nonHMACRespDataKeys []string
|
|
entry := c.router.MatchingMountEntry(req.Path)
|
|
if entry != nil {
|
|
// Get and set ignored HMAC'd value. Reset those back to empty afterwards.
|
|
if rawVals, ok := entry.synthesizedConfigCache.Load("audit_non_hmac_request_keys"); ok {
|
|
nonHMACReqDataKeys = rawVals.([]string)
|
|
}
|
|
|
|
// Get and set ignored HMAC'd value. Reset those back to empty afterwards.
|
|
if auditResp != nil {
|
|
if rawVals, ok := entry.synthesizedConfigCache.Load("audit_non_hmac_response_keys"); ok {
|
|
nonHMACRespDataKeys = rawVals.([]string)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Create an audit trail of the response
|
|
logInput := &audit.LogInput{
|
|
Auth: auth,
|
|
Request: req,
|
|
Response: auditResp,
|
|
OuterErr: err,
|
|
NonHMACReqDataKeys: nonHMACReqDataKeys,
|
|
NonHMACRespDataKeys: nonHMACRespDataKeys,
|
|
}
|
|
if auditErr := c.auditBroker.LogResponse(ctx, logInput, c.auditedHeaders); auditErr != nil {
|
|
c.logger.Error("failed to audit response", "request_path", req.Path, "error", auditErr)
|
|
return nil, ErrInternalError
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func (c *Core) handleRequest(ctx context.Context, req *logical.Request) (retResp *logical.Response, retAuth *logical.Auth, retErr error) {
|
|
defer metrics.MeasureSince([]string{"core", "handle_request"}, time.Now())
|
|
|
|
var nonHMACReqDataKeys []string
|
|
entry := c.router.MatchingMountEntry(req.Path)
|
|
if entry != nil {
|
|
// Get and set ignored HMAC'd value.
|
|
if rawVals, ok := entry.synthesizedConfigCache.Load("audit_non_hmac_request_keys"); ok {
|
|
nonHMACReqDataKeys = rawVals.([]string)
|
|
}
|
|
}
|
|
|
|
// Validate the token
|
|
auth, te, ctErr := c.checkToken(ctx, req, false)
|
|
// We run this logic first because we want to decrement the use count even in the case of an error
|
|
if te != nil {
|
|
// Attempt to use the token (decrement NumUses)
|
|
var err error
|
|
te, err = c.tokenStore.UseToken(ctx, te)
|
|
if err != nil {
|
|
c.logger.Error("failed to use token", "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, nil, retErr
|
|
}
|
|
if te == nil {
|
|
// Token has been revoked by this point
|
|
retErr = multierror.Append(retErr, logical.ErrPermissionDenied)
|
|
return nil, nil, retErr
|
|
}
|
|
if te.NumUses == tokenRevocationPending {
|
|
// We defer a revocation until after logic has run, since this is a
|
|
// valid request (this is the token's final use). We pass the ID in
|
|
// directly just to be safe in case something else modifies te later.
|
|
defer func(id string) {
|
|
leaseID, err := c.expiration.CreateOrFetchRevocationLeaseByToken(te)
|
|
if err == nil {
|
|
err = c.expiration.Revoke(ctx, leaseID)
|
|
}
|
|
if err != nil {
|
|
c.logger.Error("failed to revoke token", "error", err)
|
|
retResp = nil
|
|
retAuth = nil
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
}
|
|
if retResp != nil && retResp.Secret != nil &&
|
|
// Some backends return a TTL even without a Lease ID
|
|
retResp.Secret.LeaseID != "" {
|
|
retResp = logical.ErrorResponse("Secret cannot be returned; token had one use left, so leased credentials were immediately revoked.")
|
|
return
|
|
}
|
|
}(te.ID)
|
|
}
|
|
}
|
|
if ctErr != nil {
|
|
// If it is an internal error we return that, otherwise we
|
|
// return invalid request so that the status codes can be correct
|
|
errType := logical.ErrInvalidRequest
|
|
switch ctErr {
|
|
case ErrInternalError, logical.ErrPermissionDenied:
|
|
errType = ctErr
|
|
}
|
|
|
|
logInput := &audit.LogInput{
|
|
Auth: auth,
|
|
Request: req,
|
|
OuterErr: ctErr,
|
|
NonHMACReqDataKeys: nonHMACReqDataKeys,
|
|
}
|
|
if err := c.auditBroker.LogRequest(ctx, logInput, c.auditedHeaders); err != nil {
|
|
c.logger.Error("failed to audit request", "path", req.Path, "error", err)
|
|
}
|
|
|
|
if errType != nil {
|
|
retErr = multierror.Append(retErr, errType)
|
|
}
|
|
if ctErr == ErrInternalError {
|
|
return nil, auth, retErr
|
|
}
|
|
return logical.ErrorResponse(ctErr.Error()), auth, retErr
|
|
}
|
|
|
|
// Attach the display name
|
|
req.DisplayName = auth.DisplayName
|
|
|
|
// Create an audit trail of the request
|
|
logInput := &audit.LogInput{
|
|
Auth: auth,
|
|
Request: req,
|
|
NonHMACReqDataKeys: nonHMACReqDataKeys,
|
|
}
|
|
if err := c.auditBroker.LogRequest(ctx, logInput, c.auditedHeaders); err != nil {
|
|
c.logger.Error("failed to audit request", "path", req.Path, "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
// Route the request
|
|
resp, routeErr := c.router.Route(ctx, req)
|
|
if resp != nil {
|
|
// If wrapping is used, use the shortest between the request and response
|
|
var wrapTTL time.Duration
|
|
var wrapFormat, creationPath string
|
|
var sealWrap bool
|
|
|
|
// Ensure no wrap info information is set other than, possibly, the TTL
|
|
if resp.WrapInfo != nil {
|
|
if resp.WrapInfo.TTL > 0 {
|
|
wrapTTL = resp.WrapInfo.TTL
|
|
}
|
|
wrapFormat = resp.WrapInfo.Format
|
|
creationPath = resp.WrapInfo.CreationPath
|
|
sealWrap = resp.WrapInfo.SealWrap
|
|
resp.WrapInfo = nil
|
|
}
|
|
|
|
if req.WrapInfo != nil {
|
|
if req.WrapInfo.TTL > 0 {
|
|
switch {
|
|
case wrapTTL == 0:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
case req.WrapInfo.TTL < wrapTTL:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
}
|
|
}
|
|
// If the wrap format hasn't been set by the response, set it to
|
|
// the request format
|
|
if req.WrapInfo.Format != "" && wrapFormat == "" {
|
|
wrapFormat = req.WrapInfo.Format
|
|
}
|
|
}
|
|
|
|
if wrapTTL > 0 {
|
|
resp.WrapInfo = &wrapping.ResponseWrapInfo{
|
|
TTL: wrapTTL,
|
|
Format: wrapFormat,
|
|
CreationPath: creationPath,
|
|
SealWrap: sealWrap,
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there is a secret, we must register it with the expiration manager.
|
|
// We exclude renewal of a lease, since it does not need to be re-registered
|
|
if resp != nil && resp.Secret != nil && !strings.HasPrefix(req.Path, "sys/renew") &&
|
|
!strings.HasPrefix(req.Path, "sys/leases/renew") {
|
|
// KV mounts should return the TTL but not register
|
|
// for a lease as this provides a massive slowdown
|
|
registerLease := true
|
|
|
|
matchingMountEntry := c.router.MatchingMountEntry(req.Path)
|
|
if matchingMountEntry == nil {
|
|
c.logger.Error("unable to retrieve kv mount entry from router")
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
switch matchingMountEntry.Type {
|
|
case "kv", "generic":
|
|
// If we are kv type, first see if we are an older passthrough
|
|
// backend, and otherwise check the mount entry options.
|
|
matchingBackend := c.router.MatchingBackend(req.Path)
|
|
if matchingBackend == nil {
|
|
c.logger.Error("unable to retrieve kv backend from router")
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
if ptbe, ok := matchingBackend.(*PassthroughBackend); ok {
|
|
if !ptbe.GeneratesLeases() {
|
|
registerLease = false
|
|
resp.Secret.Renewable = false
|
|
}
|
|
} else if matchingMountEntry.Options == nil || matchingMountEntry.Options["leased_passthrough"] != "true" {
|
|
registerLease = false
|
|
resp.Secret.Renewable = false
|
|
}
|
|
|
|
case "plugin":
|
|
// If we are a plugin type and the plugin name is "kv" check the
|
|
// mount entry options.
|
|
if matchingMountEntry.Config.PluginName == "kv" && (matchingMountEntry.Options == nil || matchingMountEntry.Options["leased_passthrough"] != "true") {
|
|
registerLease = false
|
|
resp.Secret.Renewable = false
|
|
}
|
|
}
|
|
|
|
if registerLease {
|
|
sysView := c.router.MatchingSystemView(req.Path)
|
|
if sysView == nil {
|
|
c.logger.Error("unable to look up sys view for login path", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
ttl, warnings, err := framework.CalculateTTL(sysView, 0, resp.Secret.TTL, 0, resp.Secret.MaxTTL, 0, time.Time{})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
for _, warning := range warnings {
|
|
resp.AddWarning(warning)
|
|
}
|
|
resp.Secret.TTL = ttl
|
|
|
|
leaseID, err := c.expiration.Register(req, resp)
|
|
if err != nil {
|
|
c.logger.Error("failed to register lease", "request_path", req.Path, "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
resp.Secret.LeaseID = leaseID
|
|
}
|
|
}
|
|
|
|
// If the request was to renew a token, and if there are group aliases set
|
|
// in the auth object, then the group memberships should be refreshed
|
|
if strings.HasPrefix(req.Path, "auth/token/renew") &&
|
|
resp != nil &&
|
|
resp.Auth != nil &&
|
|
resp.Auth.EntityID != "" &&
|
|
resp.Auth.GroupAliases != nil &&
|
|
c.identityStore != nil {
|
|
err := c.identityStore.refreshExternalGroupMembershipsByEntityID(resp.Auth.EntityID, resp.Auth.GroupAliases)
|
|
if err != nil {
|
|
c.logger.Error("failed to refresh external group memberships", "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
}
|
|
|
|
// Only the token store is allowed to return an auth block, for any
|
|
// other request this is an internal error. We exclude renewal of a token,
|
|
// since it does not need to be re-registered
|
|
if resp != nil && resp.Auth != nil && !strings.HasPrefix(req.Path, "auth/token/renew") {
|
|
if !strings.HasPrefix(req.Path, "auth/token/") {
|
|
c.logger.Error("unexpected Auth response for non-token backend", "request_path", req.Path)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
_, identityPolicies, err := c.fetchEntityAndDerivedPolicies(resp.Auth.EntityID)
|
|
if err != nil {
|
|
c.tokenStore.revokeOrphan(ctx, te.ID)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
resp.Auth.TokenPolicies = policyutil.SanitizePolicies(resp.Auth.Policies, policyutil.DoNotAddDefaultPolicy)
|
|
if err := c.expiration.RegisterAuth(resp.Auth.CreationPath, resp.Auth); err != nil {
|
|
c.tokenStore.revokeOrphan(ctx, te.ID)
|
|
c.logger.Error("failed to register token lease", "request_path", req.Path, "error", err)
|
|
retErr = multierror.Append(retErr, ErrInternalError)
|
|
return nil, auth, retErr
|
|
}
|
|
|
|
// We do these later since it's not meaningful for backends/expmgr to
|
|
// have what is purely a snapshot of current identity policies, and
|
|
// plugins can be confused if they are checking contents of
|
|
// Auth.Policies instead of Auth.TokenPolicies
|
|
resp.Auth.IdentityPolicies = policyutil.SanitizePolicies(identityPolicies, policyutil.DoNotAddDefaultPolicy)
|
|
resp.Auth.Policies = policyutil.SanitizePolicies(append(resp.Auth.Policies, identityPolicies...), policyutil.DoNotAddDefaultPolicy)
|
|
}
|
|
|
|
if resp != nil &&
|
|
req.Path == "cubbyhole/response" &&
|
|
len(te.Policies) == 1 &&
|
|
te.Policies[0] == responseWrappingPolicyName {
|
|
resp.AddWarning("Reading from 'cubbyhole/response' is deprecated. Please use sys/wrapping/unwrap to unwrap responses, as it provides additional security checks and other benefits.")
|
|
}
|
|
|
|
// Return the response and error
|
|
if routeErr != nil {
|
|
retErr = multierror.Append(retErr, routeErr)
|
|
}
|
|
|
|
return resp, auth, retErr
|
|
}
|
|
|
|
// handleLoginRequest is used to handle a login request, which is an
|
|
// unauthenticated request to the backend.
|
|
func (c *Core) handleLoginRequest(ctx context.Context, req *logical.Request) (retResp *logical.Response, retAuth *logical.Auth, retErr error) {
|
|
defer metrics.MeasureSince([]string{"core", "handle_login_request"}, time.Now())
|
|
|
|
req.Unauthenticated = true
|
|
|
|
var auth *logical.Auth
|
|
// Create an audit trail of the request, auth is not available on login requests
|
|
// Create an audit trail of the request. Attach auth if it was returned,
|
|
// e.g. if a token was provided.
|
|
logInput := &audit.LogInput{
|
|
Auth: auth,
|
|
Request: req,
|
|
}
|
|
if err := c.auditBroker.LogRequest(ctx, logInput, c.auditedHeaders); err != nil {
|
|
c.logger.Error("failed to audit request", "path", req.Path, "error", err)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
// The token store uses authentication even when creating a new token,
|
|
// so it's handled in handleRequest. It should not be reached here.
|
|
if strings.HasPrefix(req.Path, "auth/token/") {
|
|
c.logger.Error("unexpected login request for token backend", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
// Route the request
|
|
resp, routeErr := c.router.Route(ctx, req)
|
|
if resp != nil {
|
|
// If wrapping is used, use the shortest between the request and response
|
|
var wrapTTL time.Duration
|
|
var wrapFormat, creationPath string
|
|
var sealWrap bool
|
|
|
|
// Ensure no wrap info information is set other than, possibly, the TTL
|
|
if resp.WrapInfo != nil {
|
|
if resp.WrapInfo.TTL > 0 {
|
|
wrapTTL = resp.WrapInfo.TTL
|
|
}
|
|
wrapFormat = resp.WrapInfo.Format
|
|
creationPath = resp.WrapInfo.CreationPath
|
|
sealWrap = resp.WrapInfo.SealWrap
|
|
resp.WrapInfo = nil
|
|
}
|
|
|
|
if req.WrapInfo != nil {
|
|
if req.WrapInfo.TTL > 0 {
|
|
switch {
|
|
case wrapTTL == 0:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
case req.WrapInfo.TTL < wrapTTL:
|
|
wrapTTL = req.WrapInfo.TTL
|
|
}
|
|
}
|
|
if req.WrapInfo.Format != "" && wrapFormat == "" {
|
|
wrapFormat = req.WrapInfo.Format
|
|
}
|
|
}
|
|
|
|
if wrapTTL > 0 {
|
|
resp.WrapInfo = &wrapping.ResponseWrapInfo{
|
|
TTL: wrapTTL,
|
|
Format: wrapFormat,
|
|
CreationPath: creationPath,
|
|
SealWrap: sealWrap,
|
|
}
|
|
}
|
|
}
|
|
|
|
// A login request should never return a secret!
|
|
if resp != nil && resp.Secret != nil {
|
|
c.logger.Error("unexpected Secret response for login path", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
// If the response generated an authentication, then generate the token
|
|
if resp != nil && resp.Auth != nil {
|
|
|
|
var entity *identity.Entity
|
|
auth = resp.Auth
|
|
|
|
mEntry := c.router.MatchingMountEntry(req.Path)
|
|
|
|
if auth.Alias != nil &&
|
|
mEntry != nil &&
|
|
!mEntry.Local &&
|
|
c.identityStore != nil {
|
|
// Overwrite the mount type and mount path in the alias
|
|
// information
|
|
auth.Alias.MountType = req.MountType
|
|
auth.Alias.MountAccessor = req.MountAccessor
|
|
|
|
if auth.Alias.Name == "" {
|
|
return nil, nil, fmt.Errorf("missing name in alias")
|
|
}
|
|
|
|
var err error
|
|
|
|
// Fetch the entity for the alias, or create an entity if one
|
|
// doesn't exist.
|
|
entity, err = c.identityStore.CreateOrFetchEntity(auth.Alias)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
if entity == nil {
|
|
return nil, nil, fmt.Errorf("failed to create an entity for the authenticated alias")
|
|
}
|
|
|
|
if entity.Disabled {
|
|
return nil, nil, logical.ErrPermissionDenied
|
|
}
|
|
|
|
auth.EntityID = entity.ID
|
|
if auth.GroupAliases != nil {
|
|
err = c.identityStore.refreshExternalGroupMembershipsByEntityID(auth.EntityID, auth.GroupAliases)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
}
|
|
|
|
// Determine the source of the login
|
|
source := c.router.MatchingMount(req.Path)
|
|
source = strings.TrimPrefix(source, credentialRoutePrefix)
|
|
source = strings.Replace(source, "/", "-", -1)
|
|
|
|
// Prepend the source to the display name
|
|
auth.DisplayName = strings.TrimSuffix(source+auth.DisplayName, "-")
|
|
|
|
sysView := c.router.MatchingSystemView(req.Path)
|
|
if sysView == nil {
|
|
c.logger.Error("unable to look up sys view for login path", "request_path", req.Path)
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
tokenTTL, warnings, err := framework.CalculateTTL(sysView, 0, auth.TTL, auth.Period, auth.MaxTTL, auth.ExplicitMaxTTL, time.Time{})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
for _, warning := range warnings {
|
|
resp.AddWarning(warning)
|
|
}
|
|
|
|
// We first assign token policies to what was returned from the backend
|
|
// via auth.Policies. Then, we get the full set of policies into
|
|
// auth.Policies from the backend + entity information -- this is not
|
|
// stored in the token, but we perform sanity checks on it and return
|
|
// that information to the user.
|
|
|
|
// Generate a token
|
|
te := logical.TokenEntry{
|
|
Path: req.Path,
|
|
Meta: auth.Metadata,
|
|
DisplayName: auth.DisplayName,
|
|
CreationTime: time.Now().Unix(),
|
|
TTL: tokenTTL,
|
|
NumUses: auth.NumUses,
|
|
EntityID: auth.EntityID,
|
|
BoundCIDRs: auth.BoundCIDRs,
|
|
}
|
|
|
|
te.Policies = policyutil.SanitizePolicies(auth.Policies, policyutil.AddDefaultPolicy)
|
|
|
|
_, identityPolicies, err := c.fetchEntityAndDerivedPolicies(auth.EntityID)
|
|
if err != nil {
|
|
return nil, nil, ErrInternalError
|
|
}
|
|
|
|
auth.TokenPolicies = te.Policies
|
|
allPolicies := policyutil.SanitizePolicies(append(te.Policies, identityPolicies...), policyutil.DoNotAddDefaultPolicy)
|
|
|
|
// Prevent internal policies from being assigned to tokens. We check
|
|
// this on auth.Policies including derived ones from Identity before
|
|
// actually making the token.
|
|
for _, policy := range allPolicies {
|
|
if policy == "root" {
|
|
return logical.ErrorResponse("auth methods cannot create root tokens"), nil, logical.ErrInvalidRequest
|
|
}
|
|
if strutil.StrListContains(nonAssignablePolicies, policy) {
|
|
return logical.ErrorResponse(fmt.Sprintf("cannot assign policy %q", policy)), nil, logical.ErrInvalidRequest
|
|
}
|
|
}
|
|
|
|
if err := c.tokenStore.create(ctx, &te); err != nil {
|
|
c.logger.Error("failed to create token", "error", err)
|
|
return nil, auth, ErrInternalError
|
|
}
|
|
|
|
// Populate the client token, accessor, and TTL
|
|
auth.ClientToken = te.ID
|
|
auth.Accessor = te.Accessor
|
|
auth.TTL = te.TTL
|
|
|
|
// Register with the expiration manager
|
|
if err := c.expiration.RegisterAuth(te.Path, auth); err != nil {
|
|
c.tokenStore.revokeOrphan(ctx, te.ID)
|
|
c.logger.Error("failed to register token lease", "request_path", req.Path, "error", err)
|
|
return nil, auth, ErrInternalError
|
|
}
|
|
|
|
auth.IdentityPolicies = policyutil.SanitizePolicies(identityPolicies, policyutil.DoNotAddDefaultPolicy)
|
|
auth.Policies = allPolicies
|
|
|
|
// Attach the display name, might be used by audit backends
|
|
req.DisplayName = auth.DisplayName
|
|
}
|
|
|
|
return resp, auth, routeErr
|
|
}
|